840157430 has 72 divisors (see below), whose sum is σ = 1806071904. Its totient is φ = 280449120.

The previous prime is 840157411. The next prime is 840157433. The reversal of 840157430 is 34751048.

840157430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840157433) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4398635 + ... + 4398825.

It is an arithmetic number, because the mean of its divisors is an integer number (25084332).

Almost surely, 2^840157430 is an apocalyptic number.

840157430 is an abundant number, since it is smaller than the sum of its proper divisors (965914474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840157430 is a wasteful number, since it uses less digits than its factorization.

840157430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 840157430 is about 28985.4692906636. The cubic root of 840157430 is about 943.5977373466.

The spelling of 840157430 in words is "eight hundred forty million, one hundred fifty-seven thousand, four hundred thirty".